584,863 active members*
4,933 visitors online*
Register for free
Login
Results 1 to 3 of 3
  1. #1
    Join Date
    Jan 2006
    Posts
    10

    Did I ruin my encoder?

    Hi!
    In my Ikegai TV4 with Fanuc 0M -A the servo control board larmed for high current a couple weeks ago.
    Desperate to narrow down what the problem could be I made a misstake one day.
    I was shifting X and Y cables on the servoamplifier back and forward but one time i forget to switch the cables from the encoders and the motors strugled and finally larmed and relyas cut off.
    I didnt think much at it then and I realized a few days later that there where something wrong with the Y-axis control on the board. A electrician fixed my board and now its back i the machine.
    But now I have a diffrent problem, the X-axis is shaking/vibrating when I try to go above 1000mm/min.
    I get the worst vibration when I command rapid travers and turn down the feed percentage bellow 50%, the whole machine is shaking.
    What do you think? Did my misstake with the encoder cause this problem?
    Any idea what i should do to fix my X-axis?

    Thankful for help
    /Jim

  2. #2
    Join Date
    Dec 2006
    Posts
    16

    Re: Did I ruin my encoder?

    I doubt that you damaged the encoder by not switching the connections correctly on the axes. It's more likely that when the motors "struggled", the encoder coupling may have been damaged. The initial overcurrent alarm may also have been caused by this condition, and because you probably didn't run at rapid speeds during the tests, you didn't notice the vibration until you got the Y axis fully operational.
    Holland Industrial Control Service
    [email protected]

  3. #3
    Join Date
    Mar 2017
    Posts
    314

    Re: Did I ruin my encoder?

    You still have the original problem. either a drive or motor issue.

    Without the correct encoder feedback the drive could not control the motor (commutation loss) the encoder coupling on early redcaps could drive a helicopter rotor, its not damaged. You could always test the encoder timing if you want.

    https://www.cnczone.com/forums/attac...d=412466&stc=1

    https://www.cnczone.com/forums/attac...d=412468&stc=1

Similar Threads

  1. Broken BridgePort Encoder, Need new encoder or ServoMotor w/Encoder
    By TNBG_LTD in forum Want To Buy...Need help!
    Replies: 1
    Last Post: 03-18-2020, 08:54 PM
  2. HOW TO CHANGE ACTIVE ENCODER FROM LINEAR SCALE TO MOTOR ENCODER IN SIEMENS 840D.
    By sandeepmb123 in forum SIEMENS -> Sinumerik 802D/808D/810D/828D/840D
    Replies: 0
    Last Post: 01-02-2014, 08:05 PM
  3. New Spindle Encoder Twice the Resolution of Old Encoder - What to do?
    By ecnels in forum Vertical Mill, Lathe Project Log
    Replies: 1
    Last Post: 10-12-2013, 11:39 PM
  4. This will ruin your day.
    By Starleper1 in forum Benchtop Machines
    Replies: 25
    Last Post: 03-20-2010, 07:19 PM
  5. Replies: 0
    Last Post: 07-22-2005, 09:51 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •